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The NIST Reference on Constants, Units and Uncertainty Information at the foundation of modern science and technology from the Physics Laboratory of NIST
 

Uncertainty of Measurement Results
Constants,
Units &
Uncertainty
home page

Essentials of expressing measurement uncertainty
    Basic definitions
    Evaluating uncertainty components
    Combining uncertainty components
    Expanded uncertainty and coverage factor
    Examples of uncertainty statements

Background
    
International and U.S. perspectives on measurement uncertainty

Bibliography
    
Online publications and purchasing information

 

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Online: February 1998   -   Last update: October 2000